Real Estate Impairment Charge (Details) (USD $)	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009
Real Estate Impairment Charge
Real estate impairment charges	$ 16,731,000	$ 280,188,000
SunCor
Real Estate Impairment Charge
Real estate impairment charges	17,000,000	280,000,000
Less noncontrolling interests		(14,000,000)
Total	17,000,000	266,000,000
SunCor | Homebuilding and master-planned communities
Real Estate Impairment Charge
Real estate impairment charges	1,000,000	170,000,000
SunCor | Land parcels and commercial assets
Real Estate Impairment Charge
Real estate impairment charges	11,000,000	87,000,000
SunCor | Golf courses
Real Estate Impairment Charge
Real estate impairment charges	1,000,000	23,000,000
SunCor | Other operations
Real Estate Impairment Charge
Real estate impairment charges	$ 4,000,000